A 420-kg space vehicle traveling with a velocity v0 = ( 390 m/s)i passes through the origin O at t = 0. Explosive charges then separate the vehicle into three parts, A, B, and C, with mass, respectively, 210 kg, 100 kg, and 110 kg. Knowing that at t = 4 s. Determine the corresponding positions at part C?

Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?